What type of fuel are coal, petrol and natural gas

What type of fuels are coal and petroleum ?

Coal, Petroleum and Natural Gas are

Why coal petroleum and natural gas are called fossil fuels?

What will happen if there are no petrol and coal?

Explain how, burning of fuels such as coal, petrol and diesel leads to acid rain. How is acid rain harmful ?

Tabulate the category to which these fuels belongs to. Coal,Petroleum,Natural Gas